<!DOCTYPE html>
<html lang="en">
<head>
    <meta charset="UTF-8">
    <meta name="viewport" content="width=device-width, initial-scale=1.0">
    <title>Document</title>
    <link rel="stylesheet" href="./css/out.css" type="text/css">

    <style>
        .btn{
            width: 100px; 
            height: 30px; 
            /* background-color: chartreuse; */
            font-family: 隶书;
            font-size: 20px;
            border: 1px solid red;
            border-radius: 5px;
            display: block;
        }
    </style>

</head>
<body>
    
    <input type="button" value="请登录" style="
    width: 100px; 
    height: 30px; 
    background-color: chartreuse;
    font-family: 隶书;
    font-size: 20px;
    border: 1px solid red;
    border-radius: 5px;
    display: block;"/>

    <input type="button" value="请登录" style="
    width: 100px; 
    height: 30px; 
    background-color: chartreuse;
    font-family: 隶书;
    font-size: 20px;
    border: 1px solid red;
    border-radius: 5px;
    display: block;"/>

    <input class="btn" type="button" value="请登录"/>
    <input class="btn" type="button" value="请登录"/>
    <input class="btn out" type="button" value="请登录"/>

</body>
</html>